lizdominguez101
03.10.2019 •
Mathematics
How many times can the value of the 2 in 103.52?
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Ответ:
Explanation:
This can be represented as an arithmetic sequence, since we are adding the same number each time to find the next number. The general rule for an arithmetic sequence is
where a₁ is the first term and d is the common difference.
In this problem, a₁=5, since he starts at 5, and d=4, since he is adding 4 planks per day; this gives us
Letting 12 be n for the 12th day, we have
5+4(12-1)=5+4(11)=5+44=49.